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RAD21 and KIAA0196 at 8q24 are amplified and overexpressed in prostate cancer
Author(s) -
Porkka Kati P.,
Tammela Teuvo L.J.,
Vessella Robert L.,
Visakorpi Tapio
Publication year - 2004
Publication title -
genes, chromosomes and cancer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.754
H-Index - 119
eISSN - 1098-2264
pISSN - 1045-2257
DOI - 10.1002/gcc.10289
Subject(s) - prostate cancer , comparative genomic hybridization , prostate , pca3 , complementary dna , biology , gene , cancer , microbiology and biotechnology , cancer research , fluorescence in situ hybridization , pathology , medicine , genetics , genome , chromosome
Abstract To detect genes that are overexpressed in prostate cancer, a subtracted cDNA library was first constructed from the PC‐3 cell line and subsequently screened by using cDNA microarray hybridization. Sixty‐eight genes were found to be overexpressed (ratio > 3) in PC‐3. Half of these genes were in chromosomal regions, which, using comparative genomic hybridization, we previously showed to be gained in PC‐3. Subsequently, the expression and copy number of selected genes were studied by quantitative RT‐PCR and fluorescence in situ hybridization in prostate cancer cell lines, xenografts, and clinical tumor specimens of benign prostate hyperplasia and untreated as well as hormone‐refractory prostate carcinomas. Two genes from chromosomal region 8q24— RAD21 and KIAA0196 —showed increased expression in clinical prostate carcinomas and were also amplified in 30–40% of xenografts and hormone‐refractory tumors. In addition, the expression of KIAA0196 was significantly ( P = 0.0051) higher in tumors with the gene amplification than in those without it. The data suggest that KIAA0196 and possibly RAD21 are putative target genes for the common amplification of 8q23‐24 in prostate cancer. © 2003 Wiley‐Liss, Inc.